National highways are major roads that connect important cities and regions within a country. They are designed to facilitate long-distance travel and transport goods efficiently. These highways are typically maintained by the national government and are crucial for economic development and connectivity. In many countries, national highways are marked with specific signs and numbers for easy identification. They often feature multiple lanes, rest areas, and service stations to support travelers. The quality and safety of these roads are essential for ensuring smooth transportation and reducing travel time between cities and towns.